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US 7,125,563 B2Granted
Sustained release pharmaceutical preparations and methods for producing the same
AssigneeDAVA Pharmaceuticals, Inc.
InventorsDavejibhai Kumbhani, Harish B. Pandya, Hiren Patel
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Abstract
An extended release tablet comprising a core including albuterol sulfate and extended release agent; and an extended release coating on the core to provide for sustained release of the albuterol sulfate.
Claims18
An extended release tablet comprising:
- a core including albuterol sulfate and extended release agent, said extended release agent comprising an extended release agent hydrophobic polymer comprising ethyl cellulose;
- and
- an extended release coating associated with the core to provide for sustained release of the albuterol sulfate, said extended release coating comprising a layer including extended release coating hydrophobic polymer comprising ethyl cellulose and hydrophilic polymer comprising methyl cellulose.
An extended release tablet comprising:
- a core including albuterol sulfate and extended release agent;
- an extended release coating associated with the core to provide for sustained release of the albuterol sulfate, said extended release coating comprising a layer including extended release coating hydrophobic polymer and hydrophilic polymer;
- and
- the hydrophobic polymer and the hydrophilic polymer of said extended release coating are present in a weight ratio of 55–65:45–35 of said extended release coating hydrophobic polymer to said hydrophilic polymer.
1 more element
Dependencies are inferred from the claim text.